Hi Akil,
<Snippage>
I'm not sure I understand the question ....
It's possible to give your function a set of default arguments that may be
optionally omitted so that ftn[x_, y_:10, z_:30] may be called as
ftn[x], which equates to ftn[x, 20, 30] or ftn[x, 60, 70].
Clearly, this -----------------^^^ is wrong. It should be ftn[x, 10, 30],
and the sentence should finish " or ftn[x, 60, 70] if you choose to override
the default arguments (with eg. 60 & 70)".
Stil don't understand the question though ....
D.